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Leonard is away at sea, so Sheldon and Penny spend time together and spill some revealing secrets. Howard comes to Raj's aid after a breakup.

Leonard returns from his expedition and finds things chilly between him and Sheldon, and Howard faces questions about his masculinity.

Raj puts together a scientific scavenger hunt that turns into serious, cutthroat competition that brings out the best - and the worst - in the gang.

Amy ruins one of Sheldon's favourite films. Leonard discovers how to get Penny to do his bidding. Raj and Stuart get creative with dating profiles.

Amy takes a job at Sheldon's university, putting their relationship to the test. Howard ends up sleeping on Raj's couch after a fight with Bernadette.

Sheldon fears his major scientific breakthrough may haunt him for the rest of his career. Howard makes a grand romantic gesture to Bernadette.

Georgie and Mandy get fed up staying with her parents and reconsider their living situation after a fight with Mandy's mum, Audrey.

Georgie struggles to balance life, work and family. Mandy worries for Georgie's wellbeing and Missy gets into trouble at school.

Dara Ó Briain looks back over a momentous week of news with guests Rhys James, Angela Barnes, Ed Byrne, Hugh Dennis, Janine Harouni and Milton Jones.

A sneak peek of the new series. Ed, Richard and Joanne defend outrageous opinions. Guz, Romesh and Lucy discuss Coventry, the royals, and southerners.

Dara Ó Briain looks back on the last week with the help of comedians Rhys James, Maisie Adam, Ed Byrne, Sarah Keyworth, Glenn Moore and Chris Ramsey.

Dara Ó Briain looks back over a momentous week of news with guests Rhys James, Angela Barnes, Ed Byrne, Hugh Dennis, Janine Harouni and Milton Jones.

Sara and Roisin board a Greek cruise, exploring the ship's poorly reviewed activities. Sara lives out her dream of being a cruise entertainer.

Sheldon catches a struggling Paige shoplifting. Meanwhile, George Sr. is furious when Georgie tries to buy his way out of chores.

George and Georgie go camping with Meemaw's new boyfriend, Dale, but things get complicated when her ex-boyfriend tags along.

Sheldon and Georgie bond over a money-making opportunity. Meanwhile, Mary is concerned when Missy misuses religion.

Meemaw meets Dale's ex-wife, while Sheldon is forced to work on a group project with reluctant college students.

At nearly 700 lbs Pauline has an addiction to food that is killing her and taken over the life of her son. Can she overcome it and save both their lives.

Kelly wants to say I do in her favourite colour - red! Beth never imagined herself getting married, so she wants to be the opposite of traditional with a black dress.

Staying True Before Saying 'I Do'. Indian bride Rashi wants an Americanised gown for her wedding, and Shenelle is back for her fitting, and nervous about seeing her custom dress.

Kleinfeld's Bridal unveils its renovation. Plus, celebrity dancer Jenna Johnson needs help finding her reception dress, but her wedding is only two months away.

Georgie and Mandy get upset when Audrey disciplines CeeCee without their permission.

Georgie's feud with a rival store threatens his partnership with Ruben. Meanwhile, Mandy finds out Georgie's been keeping secrets from her.

Sheldon catches a struggling Paige shoplifting. Meanwhile, George Sr. is furious when Georgie tries to buy his way out of chores.

George and Georgie go camping with Meemaw's new boyfriend, Dale, but things get complicated when her ex-boyfriend tags along.

Sheldon and Georgie bond over a money-making opportunity. Meanwhile, Mary is concerned when Missy misuses religion.

Meemaw meets Dale's ex-wife, while Sheldon is forced to work on a group project with reluctant college students.

When the girls' trip to Vegas falls through, the guys invite them to a Dungeons & Dragons date. Meanwhile, Raj and Lucy go on an awkward date.

When Leonard is offered an exciting new job opportunity overseas, Sheldon grows jealous. Raj pushes Lucy a little too far in their relationship.

Leonard is away at sea, so Sheldon and Penny spend time together and spill some revealing secrets. Howard comes to Raj's aid after a breakup.

Leonard returns from his expedition and finds things chilly between him and Sheldon, and Howard faces questions about his masculinity.

Raj puts together a scientific scavenger hunt that turns into serious, cutthroat competition that brings out the best - and the worst - in the gang.

Amy ruins one of Sheldon's favourite films. Leonard discovers how to get Penny to do his bidding. Raj and Stuart get creative with dating profiles.

Amy takes a job at Sheldon's university, putting their relationship to the test. Howard ends up sleeping on Raj's couch after a fight with Bernadette.

Sheldon fears his major scientific breakthrough may haunt him for the rest of his career. Howard makes a grand romantic gesture to Bernadette.

Georgie and Mandy struggle to balance work, family and the holidays when Audrey plans an unexpected Christmas vacation.

Audrey and Mandy urge Jim to find a new hobby now that he's retired and driving them crazy.

Sheldon visits CalTech for the first time. Meanwhile, Georgie is furious when Mary listens in on a phone call with his girlfriend.

Sheldon accuses Dr. Sturgis of plagiarism. Georgie has an awkward run-in with Veronica while on a date with his new girlfriend, Jana.

When George Sr. accidentally lands the school librarian in the hospital, the Cooper family look after her. Meemaw gives Georgie relationship advice.

When Sheldon learns the house next door is for sale, he looks for the perfect neighbours. Missy pitches against her boyfriend at the baseball game.

When Sheldon's childhood hero, Professor Proton, seeks Leonard's help with an experiment, Sheldon decides to befriend another TV science guy.

Leonard fails to stop Sheldon from overreacting after a past slight comes to light, and Penny has a run-in with Raj's former girlfriend Lucy.

Howard's mother has a say when he and Bernadette host Thanksgiving dinner for the gang. Penny and Leonard must deal with a mistake from her past.

Amy and Leonard try to help Sheldon when his accidental scientific discovery is disproved. Howard and Bernadette open their home to Raj for a week.

With Sheldon in Texas, the gang decorates for Christmas, and they each contemplate if they would have had a wonderful life if they'd never met him.

Penny turns to Leonard after her guest appearance doesn't turn out well. Sheldon works on his sense of humour, and Raj practices talking to girls.

Penny makes a big step toward pursuing a full-time acting career, and Sheldon is forced to take a vacation.

Unable to score tickets for Comic-Con, Sheldon decides to stage his own comic-book convention, while the ladies attempt to act like grown-ups.

Dara Ó Briain looks back over a momentous week of news with guests Rhys James, Angela Barnes, Ed Byrne, Hugh Dennis, Janine Harouni and Milton Jones.

A sneak peek of the new series. Ed, Richard and Joanne defend outrageous opinions. Guz, Romesh and Lucy discuss Coventry, the royals, and southerners.

A wealthy, popular Beverly Hills teen tries to help run her friends' lives... and realises that she has a lot to learn about running her own.

Molly has high hopes that a fitness tracking device will encourage Mike to be more active. But Mike has other plans for it.

After Peg suffers a heart attack after a heated argument with Molly, Mike blames his wife, who immediately sets out to make amends.

Don't Sweat It! Audrey pops the painful bumps on her body so she can feel relief. Krista's excessive sweating is so severe that she could fill up an entire milk jug with her sweat.

Tara is single mother of two who feels like a prisoner in her own body. Riddled with joint pain she is determined to lose the weight - and see her kids grow up.

At age 23, and over 600 lbs, Amber relies on her family for even simple needs. Her fear of dying young sends her 2,000 miles for weight loss surgery.

..in Bridal. Pageant queen Kristi searches for a dress that will keep all eyes on her. Meanwhile, there is a surprise in store for wannabe-bride.

Amanda finds a gorgeous dress that tops the one she's already purchased at another store. And can consultant Keasha help Brooke to become a 'Kleinfeld bride'.

Samantha has visited 100 different bridal stores: will Kleinfeld's have her dream dress? And, Lia has never tried on a wedding gown and is running out of time.

Georgie and Mandy struggle to balance work, family and the holidays when Audrey plans an unexpected Christmas vacation.

Audrey and Mandy urge Jim to find a new hobby now that he's retired and driving them crazy.

Sheldon visits CalTech for the first time. Meanwhile, Georgie is furious when Mary listens in on a phone call with his girlfriend.

Sheldon accuses Dr. Sturgis of plagiarism. Georgie has an awkward run-in with Veronica while on a date with his new girlfriend, Jana.

When George Sr. accidentally lands the school librarian in the hospital, the Cooper family look after her. Meemaw gives Georgie relationship advice.

When Sheldon learns the house next door is for sale, he looks for the perfect neighbours. Missy pitches against her boyfriend at the baseball game.

When Sheldon's childhood hero, Professor Proton, seeks Leonard's help with an experiment, Sheldon decides to befriend another TV science guy.

Leonard fails to stop Sheldon from overreacting after a past slight comes to light, and Penny has a run-in with Raj's former girlfriend Lucy.

Howard's mother has a say when he and Bernadette host Thanksgiving dinner for the gang. Penny and Leonard must deal with a mistake from her past.

Amy and Leonard try to help Sheldon when his accidental scientific discovery is disproved. Howard and Bernadette open their home to Raj for a week.

With Sheldon in Texas, the gang decorates for Christmas, and they each contemplate if they would have had a wonderful life if they'd never met him.

Penny turns to Leonard after her guest appearance doesn't turn out well. Sheldon works on his sense of humour, and Raj practices talking to girls.

Penny makes a big step toward pursuing a full-time acting career, and Sheldon is forced to take a vacation.

Unable to score tickets for Comic-Con, Sheldon decides to stage his own comic-book convention, while the ladies attempt to act like grown-ups.

Mandy makes a controversial remark on live TV that puts her job, Georgie's business, and the family's reputation at risk.

Mandy struggles to celebrate Georgie's 21st birthday after hitting a rough patch in her career.

Sheldon has a scientific breakthrough at the dentist. Dale and Meemaw go to the casino. Georgie makes a mistake when he's left in charge of the store.

Sheldon discovers that Mary's been keeping a secret about his future. Also, Meemaw is furious when she learns that Dale fired Georgie.

After graduating high school, Sheldon has a breakdown when he realises he may not be ready for college. Also, Dale tries to make amends with Meemaw.

While Sheldon volunteers at a local train museum, Missy embarks on a new stage of womanhood, and Georgie discovers his mother's guilty pleasure.

Amy talks Sheldon into a romantic Valentine's Day getaway to Napa Valley. Leonard and Penny make an emergency visit to the vet with Raj's dog.

Leonard's purchase of a new dining room table doesn't sit well with Sheldon, and Bernadette isn't happy about Howard taking another trip to space.

Things turn rocky between Sheldon and Wolowitz, and Bernadette steps in to mediate. Penny is offered a movie role that may prove embarrassing.

Sheldon's visit to see his mummy forces him to start addressing a new reality. The gang speculate about where they might be in 20 years.

Raj wrestles with dating two women at the same time, Penny is offered a part in a trashy movie, and Sheldon can't decide between two gaming systems.

Raj and Howard double-date, and the latter is flushed with embarrassment after Raj's girlfriend reveals a secret she knows about Howard.

Leonard reinstates Anything Can Happen Thursday, and Sheldon attempts something spontaneous. Raj requests help from Howard in prepping for a date.

Sheldon receives counselling from his childhood TV idol, while Penny and Leonard reach a relationship milestone and turn it into a competition.

The family finishes out their New Orleans vacation with a surprise bachelorette party for Amy. Faced with losing Andrea, Tammy seeks help.

Tammy's back on the fence when it comes to attending Amy's wedding, and Amy and Brian's wedding rehearsal goes anything but smoothly.